package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

//测试
/*


 */
public class Test {
    public static void main(String[] args) throws IOException {
        FileOutputStream fol=new FileOutputStream("demo.txt");
        int num=97;
        while (true){
            fol.write(num);
            num++;
            if (num>=123){
                break;
            }
        }
fol.close();
    }
}
